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Transparency Setting for Raster "No Data" Using ArcMap for desktop 10.1 SP1

Question asked by geonetadmin on Jan 5, 2013
Latest reply on Jan 6, 2013 by chrisclerc
Original User: chrisclerc

For some reason, my "no data" is showing up as black instead of transparent.
Not always...

I looked into ArcCatalog and saw the proper assignment of the 'no data' value... Tried both ignoring background value (under stretched) and setting it to the no data value with a 'no color' selection.

Ideas? I'm trying to mosaic several datasets together.